Perhaps you should try some spelling variations:
period programming » grid programming (Expand search), method programming (Expand search), end programming (Expand search)
decreases disease » diseases disease (Expand search), decreases adipose (Expand search), decreases breast (Expand search)
disease processes » disease process (Expand search), disease progress (Expand search), these processes (Expand search)
costs decreases » loss decreases (Expand search), cells decreases (Expand search), rats decreases (Expand search)
decrease costs » decreasing costs (Expand search), decreases post (Expand search), disease costs (Expand search)
python period » action period (Expand search)
python based » action based (Expand search)
based python » based path (Expand search), and python (Expand search), gate python (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease costs decreases disease processes ) OR ( python based python period programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease costs decreases disease processes ) OR ( python based python period programming ))*.